<div class="btn-group" role="group" aria-label="First group" class="sio-sel-icons">
    <button type="submit" class="btn btn-primary pl-5 pr-4">
            <i class="{{$ctrl.prefix}} {{$ctrl.data}}"></i></button>
    <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown"
        aria-haspopup="true" aria-expanded="false">
        <span class="sr-only">Toggle Dropdown</span>
    </button>
    <div class="dropdown-menu">
        <a class="dropdown-item btn" ng-repeat="ico in $ctrl.options" ng-click="$ctrl.select(ico)">
            <i class="{{$ctrl.prefix}} {{ico}}"></i> {{ico}}</a>        
    </div>
</div>
